CAS: 10016-20-3; A-Cyclodextrin

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Maltooctaose置于四苯硼钠,麦芽六糖,Sodium Dodecyl-Sulfate体系中,用 Aq. Phosphate Buffer 用作溶剂,化学反应生成α-环糊精
参考文献:酶介导的动态组合化学可实现大环寡糖的不平衡模板指导的合成.
标题:酶介导的动态组合化学可实现大环寡糖的不平衡模板指导的合成.
摘要:我们表明,可以通过使用人工模板分子在酶介导的动态系统中指导特定产物的自组装来控制和控制酶促反应的结果.具体来说,我们利用糖基转移酶生成相互转化的线性和大环α-1,4-D-葡聚糖(环糊精)的复杂动态混合物.我们发现,天然环糊精(α,β和γ)是作为动态捕获子系统的一部分失衡形成的,它出人意料地像在热力学控制下的动态组合库(dcl)一样瞬态运行.通过添加不同的模板,我们可以以89-99%的选择性促进每种天然环糊精的合成,或者,我们可以扩增每个大环具有9个和10个葡萄糖单元的不寻常的大环环糊精(δ和ε)的合成.在没有模板的情况下,瞬时dcl持续不到一天,并且环糊精会迅速转化为短麦芽低聚糖.模板可稳定动力学捕获的子系统,从而实现鲁棒的环糊精选择性合成,如在单个反应容器中环糊精的高产率顺序相互转化所证明的.我们的结果表明,只要在热力学和动力学控制之间达到适当的平衡,模板就可以指导不平衡的自组装,并可以
Doi:10.1039/c9Sc03983J

专利信息

专利号:US-6239313-B1
优先权日:2000-02-16
标 题 :Process for the solid state synthesis of enantiopure B-aminoalcohols from racemic epoxides
发明人：KAKULAPATI RAMA RAO; NANDURI BHANUMATHI; ELETI RAJENDER REDDY
权利人:COUNCIL SCIENT IND RES
摘要:The invention relates to a process for the solid state synthesis of enantiopure β-aminoalcohols by preparing inclusion complexes of aryloxyepoxide with cyclodextrin by adding an epoxide in equimolar ratio in an organic solvent to an aqueous solution of cyclodextrin, reacting the cyclodextrin complex of aryloxyepoxide with a nucleophile in solid state by intimately grinding the mixture using a mortar and pestle, continuing the mixing till the starting epoxide disappeared on tic, removing excess amines under vacuum, extracting the β-aminoalcohols produced with a solvent with yields of more than 50% and enantioselectivity of upto 100%.

专利号:US-6528642-B1
优先权日:1997-08-29
标题:Mono-and di-derivatives of cyclodextrins, synthesis thereof and purification and use thereof in support
发明人：DUVAL RAPHAEL; LEVEQUE HUBERT
权利人:INST FRANCAIS DU PETROLE; CHIRALSEP SARL
摘要:Mono- and di-derivatives of cyclodextrins are completely defined, also a method for their synthesis and purification, functionalised cyclodextrins obtained from these derivatives, and the synthesis of supports comprising these cyclodextrin derivatives. Use of the supports for the preparation or separation of enantiomers, for asymmetric synthesis, for catalysis, for the preparation or separation of geometrical isomers or positional isomers, or for the preparation or separation of organic molecules with a hydrophobic nature is also described.

专利号:US-10604540-B2
优先权日:2016-09-16
标题 :Controlled synthesis of polymeric perylene diimide and applications thereof
发明人：MAZAHERIPOUR AMIR; BURKE ANTHONY; GORODETSKY ALON
权利人:UNIV CALIFORNIA
摘要:Perylene diimide phosphoramidite derivatives and methods for polymerization of perylene diimide phosphoramidite derivatives and applications thereof are provided. Compounds comprise at least an electronically active base surrogate and may also include a solubilizing functionality. The base surrogate may be comprised of an electrochemically active perylene diimide (PDI) molecule, the solubility chain may comprise a PEG functionality, and the PDI may further comprise a phosphoramidite functionality as an imide substituent. The phosphoramidite functionality may be used as a chemical coupling handle for use with established nucleic acid synthesis protocols and/or automated synthesis. One or more aromatic core functionalizations may be incorporated into the PDI molecules to allow for tuning the molecule's electronic and optical properties. One or more functional terminal groups may be incorporated into the PDI molecules, such as, for example terminal thiols for attachment to gold substrates and terminal ferrocenes for electrochemical measurements, among others.

专利号:US-2008312430-A1
优先权日:2004-10-20
标题:Method of Preparing or Synthesizing Polyazamacrocycle Derivatives
发明人：CIHELNIK SIMON; DROZ LADISLAV; SRAMEK MARTIN
权利人:THERAPHARM GMBH
摘要:The present invention relates to novel processes for the synthesis of polyazamacrocycle derivatives. Furthermore, the present invention relates to novel polyazamacrocycle derivatives as well as novel intermediates for the synthesis of said polyazamacrocycle derivatives.

专利号:US-6313068-B1
优先权日:1998-08-20
标 题:Synthesis methods, complexes and delivery methods for the safe and convenient storage, transport and application of compounds for inhibiting the ethylene response in plants
发明人：DALY JAMES; KOURELIS BOB
权利人:AGROFRESH INC
摘要:The present invention generally relates to the regulation of plant physiology, in particular to methods for inhibiting the ethylene response in plants or plant products, and has three embodiments. The first embodiment relates to methods of minimizing impurities capable of reversibly binding to plant ethylene receptor sites during the synthesis of cyclopropene and its derivatives such as methylcyclopropene, thereby avoiding the negative effects these impurities have on plants treated with cyclopropene and its derivatives. The second embodiment relates to complexes formed from molecular encapsulation agents such as cyclodextrin, and cyclopropene and its derivatives such as methylcyclopropene, in addition to cyclopentadiene and diazocyclopentadiene and their derivatives, thereby providing a convenient means for storing and transporting these compounds capable of inhibiting the ethylene response in plants, which are reactive gases and highly unstable because of oxidation and other potential reactions. The third embodiment relates to convenient methods of delivering to plants these compounds capable of inhibiting the ethylene response in the plants in order to extend their shelf life.

专利号:US-2024191260-A1
优先权日:2022-12-08
标题:Methods of preparing stable nucleic acid liquid formulations
发明人：WANG YING; WOOTEN HARRISON R; JACKSON CARSON
权利人:UNIV OF NORTH CAROLINA AT WILMINGTON
摘要:Stable nucleic acid liquid formulations and methods of making and using the same are provided. According to some aspects, a method for preparing stable nucleic acid liquid formulations are provided that are resistant to nucleic acid degradation caused by enzyme-independent or enzymatic hydrolysis. In some instances, stable nucleic acid liquid compositions and methods or making the same incorporate the use of at least one of a polymer and/or a salt to form a macroscopic RNA-rich condensate. In other aspects, a method for preparing stable nucleic acid encapsulated lipid nanoparticle (LNP) liquid formulations is provided that are resistant to degradation caused by nucleic acid hydrolysis, LNP leakage, and LNP aggregation. In some instances, stable nucleic acid liquid compositions and methods or making the same incorporate the use of a pair of thermodynamically matching LNP synthesis buffer and LNP product formulation buffer with close-to-equal osmotic pressure and chemical potentials of solution components.